package 上机实践五;
import java.math.*;
public class BigIntegerExample
{
public static void main(String args[])
{   BigInteger n1=new BigInteger("987654321987654321987654321"),
              n2=new BigInteger("123456789123456789123456789"),
              result=null;
   result= n1.add(n2);//n1和n2做加法运算
   System.out.println("和:"+result.toString());
   result= n1.subtract(n2);//n1和n2做减法运算
   System.out.println("差:"+result.toString());
   result= n1.multiply(n2);//n1和n2做乘法运算
   System.out.println("积:"+result.toString());
   result= n1.divide(n2);//n1和n2做除法运算
   System.out.println("商:"+result.toString());
   BigInteger m=new BigInteger("1968957"),
              COUNT=new BigInteger("0"),
              ONE=new BigInteger("1"),
              TWO=new BigInteger("2");
System.out.println(m.toString()+"的因子有:");
   for(BigInteger i=TWO;i.compareTo(m)<0;i=i.add(ONE))
    {  if((m.remainder(i).compareTo(BigInteger.ZERO))==0)
        {  COUNT=COUNT.add(ONE);
           System.out.print("  "+i.toString());
        }
    }
System.out.println("");
    System.out.println(m.toString()+"一共有"+COUNT.toString()+"个因子");    
}
}
